Squeeze was a method of compressing single files popular on CP/M, devised by Richard (Dick) Greenlaw(?) circa 1981. It was superseded by Crunch and later CrLZH. Squeezed files were common in LBR archives. It uses Huffman compression.

Squeezed files were signified in CP/M's 8.3 filename format by replacing the middle letter of the extension with Q (.?Q? -- so FOO.TXT became FOO.TQT), with the extension .QQQ used for corner cases such as a blank extension.

The /usr/share/misc/magic file on Linux systems suggests that it was perhaps also in use on the Apple ][ platform.